Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city

doi:10.1016/j.scitotenv.2020.140556

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city
	Lian, Xinbo 1; Huang, Jianping 1,4; Huang, Rujin 3; Liu, Chuwei 1; Wang, Lina 2; Zhang, Tinghan 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020-11-10
卷号	742 页码:9
关键词	COVID-19 Lockdown AQI PM2.5 NO2 O-3
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.140556
通讯作者	Huang, Jianping(hjp@lzu.edu.cn) ; Huang, Rujin()
英文摘要	A series of strict lockdownmeasures were implemented in the areas of China worst affected by coronavirus disease 19, including Wuhan, to prevent the disease spreading. The lockdown had a substantial environmental impact, because traffic pollution and industrial emissions are important factors affecting air quality and public health in the region. After the lockdown, the average monthly air quality index (AQI) in Wuhan was 59.7, which is 33.9% lower than that before the lockdown(January 23, 2020) and 47.5% lower than that during the corresponding period (113.6) from 2015 to 2019. Compared with the conditions before the lockdown, fine particulate matter (PM2.5) decreased by 36.9% and remained the main pollutant. Nitrogen dioxide (NO2) showed the largest decrease of approximately 53.3%, and ozone (O-3) increased by 116.6%. The proportions of fixed-source emissions and transported external-source emissions in this area increased. After the lockdown, O-3 pollution was highly negatively correlated with the NO2 concentration, and the radiation increase caused by the PM2.5 reduction was not the main reason for the increase in O-3. This indicates that the generation of secondary pollutants is influenced by multiple factors and is not only governed by emission reduction. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41521004] ; Gansu Provincial Special Fund Project for Guiding Scientific and Technological Innovation and Development[2019ZX-06]
WOS关键词	SOURCE APPORTIONMENT ; POLLUTION ; EMISSIONS ; PM2.5 ; CORONAVIRUS ; METEOROLOGY ; OUTBREAK ; HEALTH ; CITIES ; REGION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000569415900018
资助机构	National Natural Science Foundation of China ; Gansu Provincial Special Fund Project for Guiding Scientific and Technological Innovation and Development
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15292]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Huang, Jianping; Huang, Rujin
作者单位	1.Lanzhou Univ, Collaborat Innovat Ctr Western Ecol Safety, Lanzhou 730000, Peoples R China 2.Gansu Prov Environm Monitoring Ctr, Lanzhou 730000, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Xian 710061, Peoples R China 4.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Lian, Xinbo,Huang, Jianping,Huang, Rujin,et al. Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,742:9.
APA	Lian, Xinbo,Huang, Jianping,Huang, Rujin,Liu, Chuwei,Wang, Lina,&Zhang, Tinghan.(2020).Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city.SCIENCE OF THE TOTAL ENVIRONMENT,742,9.
MLA	Lian, Xinbo,et al."Impact of city lockdown on the air quality of COVID-19-hit of Wuhan city".SCIENCE OF THE TOTAL ENVIRONMENT 742(2020):9.